(+/-)-(2S^*,3S^*,4S^*)-3,4-diethyl-3,4-dihydro-3-methyl-2-(4-methylphenyl)-2λ⁴-2,1-benzothiazine-2-oxide

Base Information

• Chemical Name: (+/-)-(2S^*,3S^*,4S^*)-3,4-diethyl-3,4-dihydro-3-methyl-2-(4-methylphenyl)-2λ⁴-2,1-benzothiazine-2-oxide
• CAS No.: 138850-12-1
• Molecular Formula: C₂₀H₂₅NOS
• Molecular Weight: 327.491
• Mol file: 138850-12-1.mol

Synonyms:(+/-)-(2S^*,3S^*,4S^*)-3,4-diethyl-3,4-dihydro-3-methyl-2-(4-methylphenyl)-2λ⁴-2,1-benzothiazine-2-oxide

Chemical Property of (+/-)-(2S^*,3S^*,4S^*)-3,4-diethyl-3,4-dihydro-3-methyl-2-(4-methylphenyl)-2λ⁴-2,1-benzothiazine-2-oxide

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (+/-)-(2S^*,3S^*,4S^*)-3,4-diethyl-3,4-dihydro-3-methyl-2-(4-methylphenyl)-2λ⁴-2,1-benzothiazine-2-oxide

There total 1 articles about (+/-)-(2S^*,3S^*,4S^*)-3,4-diethyl-3,4-dihydro-3-methyl-2-(4-methylphenyl)-2λ⁴-2,1-benzothiazine-2-oxide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

(+/-)-(2S*,3S*,4R*)-3,4-diethyl-3,4-dihydro-2-(4-methylphenyl)-2λ4-2,1-benzothiazine 2-oxide (134970-92-6,135093-43-5,135093-44-6,135093-45-7) + methyl iodide (74-88-4) → (+/-)-(2S*,3S*,4S*)-3,4-diethyl-3,4-dihydro-3-methyl-2-(4-methylphenyl)-2λ4-2,1-benzothiazine-2-oxide (138850-12-1)

Guidance literature:

With n-butyllithium; Yield given. Multistep reaction; 1) THF, HMPA, 5 min;

DOI:10.1016/S0040-4020(01)80999-6

Reference yield: 65.0%

(+/-)-(2S*,3S*,4S*)-3,4-diethyl-3,4-dihydro-3-methyl-2-(4-methylphenyl)-2λ4-2,1-benzothiazine-2-oxide (138850-12-1) → 4-methyl-N-(2-(1-ethyl-2-methylbut-1-enyl)-phenyl)benzenesulfinamide (138850-19-8,138850-20-1)

Guidance literature:

With potassium dimsylate; In tetrahydrofuran; at 79 ℃; for 0.366667h;

DOI:10.1016/S0040-4020(01)80999-6

Reference yield:

(+/-)-(2S*,3S*,4S*)-3,4-diethyl-3,4-dihydro-3-methyl-2-(4-methylphenyl)-2λ4-2,1-benzothiazine-2-oxide (138850-12-1) → 2-(1-ethyl-2-methylbut-1-enyl)aniline (138850-27-8,138850-28-9)

Guidance literature:

Multi-step reaction with 2 steps

1: 65 percent / potassium dimsylate / tetrahydrofuran / 0.37 h / 79 °C

2: 92 percent / KOH / ethanol / 0.75 h / 79 °C

With potassium hydroxide; potassium dimsylate; In tetrahydrofuran; ethanol;

DOI:10.1016/S0040-4020(01)80999-6

upstream raw materials:

(+/-)-(2S*,3S*,4R*)-3,4-diethyl-3,4-dihydro-2-(4-methylphenyl)-2λ⁴-2,1-benzothiazine 2-oxide

methyl iodide

Downstream raw materials:

4-methyl-N-(2-(1-ethyl-2-methylbut-1-enyl)-phenyl)benzenesulfinamide

2-(1-ethyl-2-methylbut-1-enyl)aniline